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首页> 外文会议>2015 5th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies >Harmonic current suppression of grid-connected PV power plant LCL filter based on PR control strategy
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Harmonic current suppression of grid-connected PV power plant LCL filter based on PR control strategy

机译：基于PR控制策略的并网光伏电站LCL滤波器谐波电流抑制

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摘要

The repetitive control technique based on the internal model principle, can achieve low steady-state tracking error and total harmonic distortion in AC systems, so it is widely adopted in the inverter systems. The new PR current control strategy is developed and implemented to a grid-connected three-phase inverter with LC filter. The controller resulted in a low current total harmonics distortion (THD) of 3% to meet the grid requirement. Proportion-integral values above which can achieved output controller and proportion resonant controller are adopted to control the power adjustment and zero error control of harmonic restrain. The result of the simulation shows that the improved inverter control system can effectively control the grid current waveform which tends to sine wave. The detail design of the proposed controller is presented.
机译：基于内模原理的重复控制技术在交流系统中可以实现较低的稳态跟踪误差和总谐波失真，因此在逆变器系统中得到了广泛的应用。开发了新的PR电流控制策略，并将其实施到带有LC滤波器的并网三相逆变器中。该控制器导致3％的低电流总谐波失真（THD）可以满足电网要求。采用比例积分值以上可实现输出控制器和比例谐振控制器的功率控制和谐波抑制的零误差控制。仿真结果表明，改进后的逆变器控制系统可以有效地控制趋于正弦波的电网电流波形。提出了控制器的详细设计。

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